Magnetic systems, as physical systems, are assemblies of magnetic moments (spins or orbital moments) interacting via exchange, dipolar, or relativistic (e.g., Dzyaloshinskii–Moriya) interactions, often modeled on lattices or in continuum field theories. They encompass ferromagnets, antiferromagnets, ferrimagnets, spin glasses, and frustrated magnets, and are described microscopically by Hamiltonians such as the Heisenberg, Ising, or Hubbard models. Key properties include magnetic ordering, phase transitions, domain formation, and collective excitations (spin waves, magnons). Magnetic systems are central to studying critical phenomena, symmetry breaking, and quantum many-body effects, and underpin technologies in data storage, spintronics, and magnetic sensing.
An international team of researchers, led by physicists from the University of Vienna, has achieved a breakthrough in data processing by employing an "inverse-design" approach. This method allows algorithms to configure a ...
Condensed Matter
Feb 4, 2025
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83
While most multiferroics can't operate above room temperature, a team of researchers at Tohoku University demonstrated that terbium oxide Tb2(MoO4)3 works as a multiferroic even at 160°C.
Condensed Matter
Jan 31, 2025
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82
Skyrmions are nanometer- to micrometer-sized magnetic whirls that exhibit particle-like properties and can be moved efficiently by electrical currents. These properties make skyrmions an excellent system for new types of ...
Condensed Matter
Jan 30, 2025
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50
Half-metals are unique magnetic compounds that have been attracting interest in the development of mass-storage technologies. Some of the materials in the family of Heusler alloys were predicted to have a half-metallic nature, ...
Condensed Matter
Jan 28, 2025
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28
Scientists have built an artificial motor capable of mimicking the natural mechanisms that power life. Just like the proteins in our muscles, which convert chemical energy into power to allow us to perform daily tasks, these ...
Bio & Medicine
Jan 15, 2025
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116
Molecular crystals with conductivity and magnetism, due to their low impurity concentrations, provide valuable insights into valence electrons. They have helped link charge ordering to superconductivity and to explore quantum ...
Condensed Matter
Jan 10, 2025
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78
An international research team, working with cutting-edge technology at the University of Nebraska–Lincoln, has made a discovery that may dramatically expand the materials used in next-generation, energy-efficient memory ...
Nanophysics
Jan 8, 2025
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132
Numerous memory types for computing devices have emerged in recent years, aiming to overcome the limitations imposed by traditional random access memory (RAM). Magnetoresistive RAM (MRAM) is one such memory type which offers ...
Condensed Matter
Jan 7, 2025
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61
The future storage and processing of data stand to benefit greatly from tiny magnetic whirlpools known as skyrmions, which are robust against noise and may be useful in lower power consumption devices. The development of ...
Condensed Matter
Dec 19, 2024
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98
A team of researchers has identified a unique phenomenon, a "skin effect," in the nonlinear optical responses of antiferromagnetic materials. The research, published in Physical Review Letters, provides new insights into ...
Condensed Matter
Dec 18, 2024
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68
